Resolves wayfinder ticket #6. Covers the two server endpoints (Anthropic
shim vs OpenAI-compatible), exact config for all three CLIs, and surfaces
the shared Qwen3.8-27B tool-calling risk plus OpenCode's own documented
local-backend brittleness up front rather than burying it.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
